RUBBER COMPOSITIONS FOR SILICA-BASED TIRE CASINGS CONTAINING A REINFORCING ADDITIVE BASED ON A FUNCTIONALIZED POLYORGANOSILOXANE AND AN ORGANOSILANE COMPOUND.

摘要

A rubber composition for the manufacture of tire casings having improved hysteretic properties and safety, based on at least one elastomer and silica as a reinforcing filler containing a reinforcing additive consisting of the mixture and / or or the reaction product "in situ" of at least one functionalized polyorganosiloxane compound comprising, per molecule, at least one siloxyl functional unit capable of binding chemically and / or physically with the surface hydroxyl sites of the silica particles and at least a functionalized organosilane compound comprising, per molecule, at least one functional group capable of bonding chemically and / or physically with the polyorganosiloxane and / or the hydroxylated sites of the silica particles and at least one other functional group capable of binding chemically and / or physically to the polymer chains (s).